diff --git a/erpnext/manufacturing/doctype/job_card/job_card.py b/erpnext/manufacturing/doctype/job_card/job_card.py
index e6090ba02a2..3c406156ebd 100644
--- a/erpnext/manufacturing/doctype/job_card/job_card.py
+++ b/erpnext/manufacturing/doctype/job_card/job_card.py
@@ -62,7 +62,7 @@ class JobCard(Document):
 
 		if self.get('time_logs'):
 			for d in self.get('time_logs'):
-				if get_datetime(d.from_time) > get_datetime(d.to_time):
+				if d.to_time and get_datetime(d.from_time) > get_datetime(d.to_time):
 					frappe.throw(_("Row {0}: From time must be less than to time").format(d.idx))
 
 				data = self.get_overlap_for(d)
diff --git a/erpnext/payroll/doctype/salary_slip/salary_slip.py b/erpnext/payroll/doctype/salary_slip/salary_slip.py
index 8ea791f620f..e70c5116bed 100644
--- a/erpnext/payroll/doctype/salary_slip/salary_slip.py
+++ b/erpnext/payroll/doctype/salary_slip/salary_slip.py
@@ -1265,7 +1265,7 @@ class SalarySlip(TransactionBase):
 			for i, earning in enumerate(self.earnings):
 				if earning.salary_component == salary_component:
 					self.earnings[i].amount = wages_amount
-				self.gross_pay += self.earnings[i].amount
+				self.gross_pay += flt(self.earnings[i].amount, earning.precision("amount"))
 		self.net_pay = flt(self.gross_pay) - flt(self.total_deduction)
 
 	def compute_year_to_date(self):
diff --git a/erpnext/public/js/controllers/transaction.js b/erpnext/public/js/controllers/transaction.js
index e742ae9a890..4801b333df9 100644
--- a/erpnext/public/js/controllers/transaction.js
+++ b/erpnext/public/js/controllers/transaction.js
@@ -525,6 +525,7 @@ erpnext.TransactionController = erpnext.taxes_and_totals.extend({
 
 		item.weight_per_unit = 0;
 		item.weight_uom = '';
+		item.conversion_factor = 0;
 
 		if(['Sales Invoice'].includes(this.frm.doc.doctype)) {
 			update_stock = cint(me.frm.doc.update_stock);
diff --git a/erpnext/www/lms/macros/hero.html b/erpnext/www/lms/macros/hero.html
index e72bfc8175b..95ba8f7df28 100644
--- a/erpnext/www/lms/macros/hero.html
+++ b/erpnext/www/lms/macros/hero.html
@@ -11,7 +11,7 @@
 			{% if frappe.session.user == 'Guest' %}
 			<a id="signup" class="btn btn-primary btn-lg" href="/login#signup">{{_('Sign Up')}}</a>
 			{% elif not has_access %}
-			<button id="enroll" class="btn btn-primary btn-lg" onclick="enroll()" disabled>{{_('Enroll')}}</button>
+			<button id="enroll" class="btn btn-primary btn-lg" onclick="enroll()">{{_('Enroll')}}</button>
 			{% endif %}
 		</p>
 	</div>
@@ -20,34 +20,35 @@
 <script type="text/javascript">
 	frappe.ready(() => {
 		btn = document.getElementById('enroll');
-		if (btn) btn.disabled = false;
 	})
 
 	function enroll() {
 		let params = frappe.utils.get_query_params()
 
 		let btn = document.getElementById('enroll');
-		btn.disbaled = true;
-		btn.innerText = __('Enrolling...')
 
 		let opts = {
 			method: 'erpnext.education.utils.enroll_in_program',
 			args: {
 				program_name: params.program
-			}
+			},
+			freeze: true,
+			freeze_message: __('Enrolling...')
 		}
 
 		frappe.call(opts).then(res => {
 			let success_dialog = new frappe.ui.Dialog({
 				title: __('Success'),
+				primary_action_label: __('View Program Content'),
+				primary_action: function() {
+					window.location.reload();
+				},
 				secondary_action: function() {
-					window.location.reload()
+					window.location.reload();
 				}
 			})
-			success_dialog.set_message(__('You have successfully enrolled for the program '));
-			success_dialog.$message.show()
 			success_dialog.show();
-			btn.disbaled = false;
+			success_dialog.set_message(__('You have successfully enrolled for the program '));
 		})
 	}
 </script>